Garry's Mod SRCDS crashing immidiatly on start why?

[TheRebellion]

I start it up using this srcds -console -game garrysmod +map gm_flatgrass_revolution +maxplayers 16 and it immidiatly crashes Windows XP home SP3 Wireless 54 MBPS max con (usually medium strength) 2 GB RAM 54 GB free space Intel core 2 DUO 1.93 GHZ Thanks in advance

[realchamp]

Do you run any addons?